Lancaster police are appealing for witnesses to come forward after a 31 year old man was assaulted in a town centre bar.

The offence took place at Swank bar on Penny Street on 4th December 2011 when the victim was verbally abused on the dance floor by an unknown man.

A short time later he visited the toilet where he was assaulted from behind and knocked unconscious. He was later found to have suffered a broken jaw.

DC Ciara Campbell Lancaster CID said: “It is unclear at this stage if the verbal altercation on the dance floor is linked to the assault but I’d appeal to witnesses in the bar that evening to come forward and speak with Lancaster CID if they have any information as to the possible identity of the persons responsible.”

Anyone with any information should call Lancashire Police on 101.

People with information can also contact the independent charity Crimestoppers anonymously on 0800 555 111 or on-line at Crimestoppers-uk.org. No personal details are taken, information is not traced or recorded and you will not go to court.